Hello, I am a high school student carrying out a physics experiment. I created a short circuit in order to see how much heat different types of metals would release when a current is running through them (4.5 A). In my experiment, I tested three different types of metals: Brass, Stainless Steel, and Aluminium. Stainless Steel 304 has a resistivity of2.84∗ 10^(-7) Ohm meters(AK Steel.). Aluminium 6063 has a resistivity of 3.32 ∗ 10^(-8) Ohm meters("ALCOA 6063."). Free Machining Brass 3604 has a resistivity of 5.9 ∗ 10^(-8)Ohm meters(The Engineering Toolbox. "Resistivity, Conductivity and Temperature Coefficients for Some Common Materials." ) I immersed 4 cm of these three different metals all with the same diameter of 3mm into 20ml of vegetable oil and observed the change in temperature by using a thermometer. The container with the vegetable oil where the experiment was conducted was surrounded by a layer of glass fiber to insulate it. Due to Joule's First Law, which is that Q=RtI^2 (R= Resistance, t=time period, I=current) In my experiment, I kept current and time period constant. I expected that: Heat Released by Stainless Steel> Heat Released by Brass> Heat Released by Aluminium However, when I actually did the experiment, Heat Released by Stainless Steel>Heat Released by Aluminium>Heat Released by Brass Can anyone offer an explanation for this? Thank you!